Car-stop.



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APPLMATION FILED DEQ. 18, 1907.

Patented Feb. 2, 1909.

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WJTNESSES J. T. HOWELL. A

GAR STOP.

APVPLIOATION ILBD DEG. 18,'1907.

Patented Feb. 2, 1909.

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W1 TNESSES INVENTOR JAMES vT. HOWELL, OF SEATTLE, WASHINGTON.

CAR-STOP.

Specication of Letters Patent.

Y Patented Feb. 2, 1909.

Application filed December 18, 1907. Serial No. 407,062.

.To all 'whom ttmay concern.'

Be it known that I, JAMES T.. HOWELL, a citizen of the United States of America, and a resident of the city of Seattle, in the county of King and State of Nashin ton, have invented certain new and useful mprovements in Car-Stops, of which the following is a speciflcation.

My invention aims primarily to provide emcient brake mechanism for stopping cars.

A further obj ect is to provide improved mechanism, particularly adapted for use on cable and electric cars, but not being limited thereto, by which cars traveling in either direction can be stopped on steep grades.

A further obj ect resides in the provision of novel brake mechanism, the brake shoes of which are ap lied by movement of the car.

A further o ject is to provide brake means which embodies one or more track shoes with which are combined to operate in unison therewith suitable means which exerts a braking action by engaging the road bed.

With the above and other objects in view, to be referred to as the description progresses, the invention resides in the features of construction, parts, arrangement and combinations of parts hereinafter described and succinctly defined in the appended claims.

Referring now to the accompanying drawings in which like numerals of reference indicate like parts throughout the several views:

Figure 1 is a side view of a car truck, partly in section, equipped with brake mechanism constructed in accordance with my invention, the brake shoes being shown as being elevated, and showing by dotted lines applied as in braking position. Fig. 2 is a vertical section taken through the car truck and showing theforward brake shoes lowered, and Fig. 3 is a view in top plan of the truck, with the clutches of the respective brake mechanisms shown in open position, a portion of the car truck being broken away.'

Referring now to the drawings by numerals of reference, 1 indicates a car truck which may be ofany desired construction, 2, 2 the front and rear axles respectively, and 3, 3 wheels fixed to said axles and arranged to roll on the track rails 4. Y

Reference numeral 5 indicates suitablev track shoes supported by rigid arms 6 to the rear of wheels 3, for swinging to and from the underlying track rails. As now considered, arms 6 are .fixed to loose clutch members 7 of suitable clutches 7, arran ed on axle 2.

Reference numeral 7 in icates the other members of clutches 7, the same being secured to movement with axle 2 by suitable splines 8 and bein slidable on said axle toward and from t e member 7. Clutch members 7 7 are provided on their contiguous faces `with ratchet teeth, as clearly illustrated.

Connected with clutch members 7 are levers 9, which levers are connected by links 10 to a single operating lever 11, through the medium of which the clutch members 7 can be simultaneously disengaged from clutch members 7.

bers 7 when lever 11 is released, as from a toothed segment 13.

Track shoes 5 are preferably connected by a brake beam 14, and are normally held elevated by suitable means, consisting of a spring 15.

In operation the parts are normally arranged as shown in Fig. 1, but upon approaching a steep grade, lever 11 can, if desired be released so that the ratchet devicesA will be set to operate upon backward movement of the car. While the car travels forward up the grade the teeth of clutch members 7 ride over the teeth of clutch members 7 and the shoes will obviously not be applied. Should, however, the car start to go backward, the clutches will operate to swing the shoes downwardly into engagement with rails 4 and beneath the wheels 2, as indicated by dotted lines in Fig. 1, until 'the movement of said shoes is limited by chains 16.

Springs 12, force clutch members 7 into engagement with clutch mem- On each track shoe 5, are suitable dependvratchet teeth. however, set in a relatively reverse mannerj to thoseof clutches 7 so that brake shoes 5' will be applied by forward movement et the clutch membersof the clutches 7 a, the same bein secured to move with axle 2 but being supported for sliding thereon lin the same manner asclutch members 7. The

component members of clutches 7 a are also` yprovided on their contiguous faces with These ratchet teeth are car, as will be readily understood.

)teierence numeral 9 indicates levers connected to clutch members 7a, and being connected by links 10 to an operating lever 11 which is normally engaged with a suitably toothed segment 13 for preventing springs 12 closing the clutches.

A spring 15 engaged with brake beam 11i normallyholds shoes 5 elevated. Shoes 5 'like shoes 5 are adapted to be moved beneath the adjacent wheels of the car, see dotted position -in Fig. l1, and their movement is limited by-snitable chains 15.

When it is desired Lto apply the braking mechanism just described, operating lever 11 is released whereupon, clutches ,7"L will be closed and shoe 5 swung downwardly by movement of the car onto the rails beneath the wheels 3.

The mechanism described and shown in the drawings, illustrate one embodiment of my invention which will operate in -an eilicient manner, I doinotwishto be understood however, as limiting myself to this form of my invention.

Having thus 'fully described my invention, what I claim as new and desire to secure by Letters Patentoi the United States, is:

1. In combination with a car and the track, Ya vbrake shoe swingingly supported on an axle oi' said car, and means to connect -saidbrake shoe with said axle whereby they will .move in unison.

2. In combination with an axle of the car, means swingingly supported on said axle, a

shoe carried by said means, and means for .a clutch thereon comprising two members one of which is normally loose on said axle, and a brake shoe connected to said normally loose clutch member ior rotation therewith.

4. In combination with an axle ol the ear, a clutch arranged to be driven by said axle and comprising two members one ol which is normally loose, an arm iixed to said normally loose clutch member, and a brake shoe carried by said arm.

5. In combination with the track aiid the car, independent brake means supported on said car and being connected to be applied one by forward movement oisaid car and the other by backward movement oi said car, and means for holding the former olIV said brake means `normally out ol operation.

6. In combination with the track and a wheel and axle oil" the car, a clutchv comprising a member arranged to rotate on said axle and a second member connected to rotate with said axle and being supported for movement toward and from said iirst inember, said clutch members being provided on their contiguous 'faces with teeth, a shoe connected to be moved by iirst named clutch member into engagement with the rail, and means ior throwing said second named clutch member outot engagement with the ther.

7. In combination with the traek and a wheel and axle ol" the car, a clutch comprising a member supported i'or rotation, and a second member supported i'or movement toward and trom said first member and being connected to rotate with said axle, said` clutch members being provided on their contiguous tacos with ratchet teeth, a shoe connected to be moved by said lirst named clutch member into engagement with the rail, andv means yieldingly pressing said second named clutch member toward said iirst named clutch member.

S. In combination with the track and a wheel and axle of the cai', a clutch comprising a member supported on said axle i'or rotation and. a second member connected to rotate with said axle and being slidable thereon, said clutch members being provided on their contiguous laces with teeth, a track shoe, a rigid connection between said shoe and said iirst named clutch member, nie-.ms yieldingly pressing said slidable clutch member toward the other, and means to normally hold said slidable clutch member from the other.

9. In combination with the track and a wheel and axle oi the car, a clutch comprising a member supported for rotation and a second member supported i'or movement toward and from said lirst member and being connected to lrotate with said axle, said clutch members being provided on their contiguous faces with teeth, a shoe con- 1'1. In combination With a track and a car, a brake mechanism for said vcar includinga track shoe and road bed shoes connected for simultaneous operation7 said road bed shoes having their lower faces provided With teeth. v

Signed at Seattle, Washington this 7th lday of December 1907.

, v v JAA/IES T. HOWELL. lvitnesses: FRANK E. ADAMS,

STEPHEN A. BROOKS. 

